The Hang Seng was a standout performer, jumping by 2% Friday. The Hong Kong index has surged by 18% since the start of the year.

3. Stock market mover -- King Digital: The maker of the popular Candy Crush game is getting crushed. Shares in King Digital Entertainment(KING) are down by roughly 10% premarket after the company said foreign currency swings could hurt its results later in the year. Investors are also concerned about whether the company's new games will be popular.

4. Economics: The University of Michigan will publish its monthly consumer sentiment index at 10 a.m. ET.